Respirometer



FIG. 1 is a perspective view of a respirometer of the present design showing the top, front, and first side portions of the respirometer;

FIG. 2 a perspective view of a respirometer of the present design showing the top, back, and first side portions of the respirometer;

FIG. 3 is a front view of a respirometer of the present design showing the front portion of the respirometer;

FIG. 4 is a back view of a respirometer of the present design showing the back portion of the respirometer;

FIG. 5 is a top view of a respirometer of the present design showing the top portion of the respirometer;

FIG. 6 is a bottom view of a respirometer of the present design showing the bottom portion of the respirometer; and,

FIG. 7 is a side view of a respirometer of the present design showing the first side portion of the respirometer. In the drawings, the broken lines depict unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a respirometer, as shown and described. 